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This Listing is For Our Service of Cylinder Boring, For the listed price of $45.00 we will bore one cylinder up to .040 over, Boring over .040 is considered a BIG BORE and will cost a little more. Includes Honing to size and Chamfering ports on 2 strokes. For twins Triples or inline four's just buy multiple auctions.

BUYER PAYS ALL SHIPPING COSTS - We can return most single cylinders anywhere in the Continental US for $15.00 

We Specialize in Cylinder Repair, Boring & Sleeve Installation. Please contact us before purchase if you are not sure your cylinder can be bored, some cylinders are plated with a chrome or nikasil and cannot be bored but we can install a steel sleeve that is bore-able. Note Sleeve installations take extensive machining and cost more than a simple bore job.

Pistons - We recommend sending the piston you intend to use along with your cylinder. we take a measurement from that piston to set the piston to cylinder wall clearance. If you dont know what size piston to get you can send us the cylinder and we will measure it up and get you the correct size at additional cost.

Powevalve cylinders - When boring a cylinder with an exhaust powervalve the powervalve needs to be cut back for needed piston clearance when boring .040 or larger over standard size, this is not included in the price of this listing.

We are capable of boring cylinders from 45mm dia. and up. We do 2 and 4 Stroke Motorcycle ATV Snowmobile and Personal Watercraft Only. 

More Info - Call us during Business Hours of Monday Tuesday Thursday and Friday 9 am to 5 pm Wednesday 9 am to 3 pm Eastern Time (585) 415-8617 Call our Text Verizon Wireless Number.

RPJ Performance has Been In business since 1993 We are located Near Niagara Falls NY.

NOTE: Additional Charges may apply to certain Makes & Models, such as Power-valve work, stud removal, gasket removal, Cleaning of extremely dirty cylinders, extensive machining, shipping ETC. In such case the customer will be notified with an estimate and explanation of the additional charges.  Normally Studs do not need to be removed for our boring process, But you will be charged extra for Gasket and Dirt removal!